Apparatus for cleaning films.



Patented Oct. 15, 1918.

M. S. ROSENFELD APPARATUS FOR CLANINGILMS.

APPLICATION FILED MAY I4. |915.

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,v l L M. AS. ROSENFELD.

APPARATUS FOR CLEANING FILMS.

APPLICATION FILED MAY I4. w15.

1,281,841. Patented 0n15,1918.

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M. S. ROSENFELD.

APPARATUS FOR CLEANING FILMS.

APPLICATION FILED MAY I4| 19,15. 1,281,841. Patented 0@t.15,1918.

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A A I m Ww IIII- .I II| |I.xI|IIr/A W J ,M fe f 7 Q --/w l M i Z2/ 1 .Av6 Wm Ww? Q @M/ UNITEU STATES PATENT FFICE.

MAURICE S. ROSENFELD, F NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS,T0

JACOB SCHECHTER, 0F NEW YORK, N. Y.

APPARATUS FOR CLEANING' FILMS.

To all whom t may concern.'

Be it known that I, MAURICE S. ROSEN- FELD, a citizen of the UnitedStates, residingin the borough of the Bronx, county of Bronx, city andState of New York, have invented a certain new and useful Appa ratus forCleanin Films, of .which thefolc lowing is a spec' cation.

p lamp, and dust.

My invention relates to an apparatus for cleaning motion picture filmswhich in use become coated with oil from the projecting machine,-smallparticles of carbon from the The objects of my' invention are to producea device in which foreign substances can be removed from the yfilm in arapid and efficient manner, and without` injury to the film or thecoating thereon.

These and further objects will more fully appear in the following,Specification and accompanying drawings considered together orseparately.

In the drawings in which the same parts i in all the figures aredesignated by similar brackets are of such alength that when the4 coveris thrown back,- it will'be entirely clear 4. At the other end oreference characters,' Figure l'is a plan view .of the device; Fi 2 is alongitudinal section taken on fthe l1ne 2--2 of Fig. 1; and

Fig. 3 is a transverse section taken on thel line 3 3 of Fig. 1.

In all the drawings, 1 representsl a bas-e plate on which is supported atrough 2 suported on a leg 3 and being provided at its ottom with adraw-off cock. The trough is provided at one end with an idle roller 4,and

at the opposite end with an idle roller 5. The roller 5 is preferablycomposed of soft rubber.

Extending from the back of the troughl .is a pair of brackets 6, 6 towhich is hinged a cover or lid 7. The cover is ofa size to fitover theopen top of the trough, and the of the trough. f The cover. is provided.with a roller 8 corresponding in position to, and` the surface of whichen ages with, the roller the coveris a soft Specification of LettersPatent.

Application led Hay ..4, 1915. Serial No. 28,121. I

is adapted to engage, to lock thecover in closed position on the trough.

Mounted on the" base 1 is a standard 1 4, and pivoted at its center tothe standard, is

an arm 15. The upper end of the arm car* ries a sprocket-'Wheel 16,which is driven by means of a chain 17 from a source of power (notshown). The lower end of the arm 15 is engaged by a spring 18 which actsto yieldingly hold the sprocket wheel 16 against the 4pull of the chain.

Projecting from one end of the cover is a pair of bracket arms 19, 19,in which is journaled a shaft 20. The shaft carries a sprocket wheel 21and a felt or other builing Awheel 22. l

Carried in'webs extending from the end of the trough 2 and integral-with the baseV 1 is a stud 23, to which is pivoted anangle lever 24.@One end of the lever 24 is bifurcated, and carries a shaft 25, on whichis mounted a buiiin wheel 26 similar to the wheel 22 and whlch is incontact with the same, `and a sprocket 21a similar to sprocket 21. Thechain 17 passes under the sprocket 21, around the sprocket 16, and overthe sprocket. ,This will causethe bufling wheels to rotate in the samedirection. The tail of the angle lever is provided with a screw 27,which enga es with a lug 28 on the base. By means 0% the screw the wheel26 may be brought into proper relation to the wheel 22.

Mounted in one side wall of the trough is a short'shaft 29 carrying atits inner end an arm 30, the free endof which is bifurcated, and carriesa roller 31. The outer end of the shaft 29 is lprovided with a handle32,- the free extremity of which carries a spring pressed pin 33 whichmay engage with a shallow recess in the side of the trough to lock thevhandle in position.

Mounted on the base l adjacent to the buiiing wheels 22, 26 is astandard which carries at its upper end a guide roller 34 on which theiilin rests.

The operation of the device'is as follows:

The trough is partially iilled withv a solumatter which adheres-to thefilm,` and will not injure the vfilm body nor the photographic coatingthereon. The cover is thrownback, and the arm 30 is raised. A filin isled fromv a reel (not shown), passed over the roller 4, and dipped intothe so1u machine, if e negative.

tion. The roller is then lowered on to the lilm in the solution, toinsure the film passing below the surface thereof. The end of the lilmis then luid on the roller then on the buling wheel 26, next on theguide pulley 3l, and finally secured to the shaft of a power driventake-up reel (not shown).

put in operation, the ilm isdrawn from the supply reel and through thesolution in the trough. The solution will loosen or remove the foreignsubstances from the film as it, the film, passes between the rollers oand 9, they will be rotated by Contact with the film, and will squeezeor squeegee the solution from the film. The film now passes between thebufiing wheels 22 and 26 which are traveling at a high rate of speed.The butiing wheels will thoroughly dry the film and polish itssurfaces.A The film is now wound upon the power driven reel, when it isin position to be used in a projecting machine, if a positive, or in aprinting In accordance with the provisions of the patent'statutes, Ihave described the prineiple ot' my invention together with theapparatus. which I now consider to represent thebest embodiment thereof,buttI desire to have it understood that the apparatus shown is merelyillustrative, and that the invention ca'n be carried out in other wayswithout departing from the spirit of my invention.

11u ving now described my invention, whit 35 I claim as new und desireto secure by Letters Patent of the United States, is as fol- A lows: Thepower reel andthe chain 17 are now 1. A device of the characterdescribed, having 'a trough for carrying s, cleansing 40 solution,smooth rollers .on the trough, a cover, smooth rollers on the cover, asmooth guide roller carried on an arm pivoted in the trough`l whereby ahn may be passed between the rollers on the trough and cover 45 andunder the guide roller. y

2. A device of the character described, having a trough for carrying acleansing solution, smooth rollers on the trough, a cover, smoothrollers on the cover, a smooth guide roller carried on an arm pivoted'in the trough,'means for locking the guide roller in position, wherebya film may be passed between the rollers on the trough and'coverand'under the guide roller.

. This specification signed and witnessed this 10th day of May, 1915.

MAURICE s. RosENFEILD.

Witnesses: y

JACOB Scnmlrmiz, JOHN L. Larson.

